Depends where you are though. A Mercurian day is phase locked, I think, to the orbit and is 2/3 of an orbital period from our POV and half from theirs. I believe the temperature never gets above a little over 400C (around 700K in fact) in the equatorial summer so lead would be molten in summer but iron wouldn’t be anywhere near it. There may be regions near the poles where, if you kept walking in the opposite direction to the rotation, the temperature would be human-survivable (but the radiation would quickly kill you.)
If the planet did have surface supplies of elemental mercury, it would vaporise in summer heat at the Equator, so there would be mercury clouds which would rain liquid mercury as they reached colder areas, and freeze to mercury ice at the poles. Thus you would eventually get polar icecaps of solid mercury, since they never go warm enough to melt it. Eventually all the mercury would freeze at the poles and the clouds and rain would stop.